Fix metric table cell group link prefix

What does this MR do and why?

Ensures group / subgroup namespace paths are prefixed with groups to ensure the metric paths are correct.

Screenshots

Before	After

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

How to set up and validate locally

Run the related tests

$ yarn jest --watch metric_table_cell